Using wood ashes for your chickens saves money. (fireplace ash only, not BBQ coals, etc) and when needed, mix 2 parts ash to 1 part sand for the chickens to do their dust bathing. It keeps mites away. That and paint the coop with hydrated lime.
You can do this at home, but be very careful, as you can easily hurt the chicks. Determining Sex in Chicks by Don Schrider from the June/July, 2011 issue of Backyard Poultry - Backyard Poultry Magazine